Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).create(<ftag1>,"BndLayerProp") to define boundary layer properties for the 
BndLayer feature 
<ftag>.
 
    Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).feature(<ftag1>).selection() to specify the boundary or edge selection. If you do not specify the selection, it is empty.
 
    The value of blnlayers is a positive integer scalar, or a string that evaluates to a positive integer.
 
    The values of blhmin, 
blhminfact, 
blhtot, and 
blstretch are positive real scalars, or strings that evaluate to positive real scalars.
 
    Use the properties blhmin, 
blstretch, and 
blnlayers to specify the distribution of the boundary layers. 
blhmin specifies the thickness of the initial boundary layer, 
blhtot specifies the total thickness of the boundary layer mesh, 
blstretch a stretching factor, and 
blnlayers the number of boundary layers. The thickness of the 
mth boundary layer (
m=1 to 
blnlayers) is 
blstretch(m−1)blhmin. The number of boundary layers and the thickness of the boundary layers might be automatically reduced in thin regions.
 
    The default values of blhmin and 
blhtot are determined from the specified element size in the sequence.
 
    It is also possible to specify the thickness of the initial layer by using the blhminfact property. Use this property to specify a scaling factor that multiplies the thickness of the first boundary layer.
 
    The property inittype determines which of 
blhminfact, 
blhmin, or 
blhtot that is used. You do not need to set it explicitly because the feature automatically changes it when you set one of 
blhminfact, 
blhmin, or 
blhtot.